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IPFIX Information Model &lt;draft-ipfix-info-03.txt&gt;. Paul Callato, Jeff Meyer, Juergen Quittek 59th IETF meeting, IPFIX session. Changes Since Version -02. several editorial changes changed the XML representation of the information model replaced representation of IPFIX protocol fields

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ipfix information model draft ipfix info 03 txt

IPFIX Information Model<draft-ipfix-info-03.txt>

Paul Callato, Jeff Meyer, Juergen Quittek

59th IETF meeting, IPFIX session

changes since version 02
Changes Since Version -02
  • several editorial changes
  • changed the XML representation of the information model
    • replaced representation of IPFIX protocol fields
    • added representation of field template
    • added representation of abstract data types
  • modified list of (abstract) data types
  • modified list of fields

2

xml representation
XML Representation

translate with XSLT

scripts and include

section 2

info

model

schema

.xsd

info

model

I-D

.xml

section 3

translate with

XSLT scripts

validate

info

model

.xml

section 4

info

model

I-D

.txt

include in

appendices

3

issue 1 datatypes
Issue 1: Datatypes
  • Concrete XML data types were replaced by abstract IPFIX data types
  • What is the useful set in order to be prepared for future extensions?
  • version -02:
    • byte, unsignedByte
    • short, unsignedShort
    • int, unsignedInt
    • long, unsignedLong
    • float, double
    • hexBinary
    • string
    • boolean
    • dateTime, ipdr:dateTimeMsecm
    • ipdr:dateTimeUsec, ipfix:dateTimeNsec
    • ipdr:ipV4Addr, ipdr:ipV6Addr
    • ipdr:UUID
  • version -03:
    • octet
    • unsigned16
    • unsigned32
    • unsigned64
    • float32
    • octetArray
    • string
    • boolean
    • dateTimeSeconds
    • dataTimeMicroSeconds
    • ipv4Address,ipv6Address

4

issue 2 field ids
Issue 2: Field IDs
  • Current version is compatible to NFv9 field IDs
  • Allocating field IDs will be delegated to IANA
  • There are some field Ids that we do not want to re-use.
    • These will be labeled "reserved for NFv9"
  • The list of currently unused NFv9 fields needs to be checked for candidates to include in IPFIX

5

nfv9 field issues
NFv9 Field Issues
  • NFv9 has separate counters for incoming octets/packets and outgoing octets/packets
    • not nicely applicable to probes
    • unclear observation point
    • Shall we just use one of them for IPFIX?
    • Shall we define new fiels without "in" or "out" as prefix?
  • NFv9 has separated values for IPv4 and IPv6 network mask length
    • shall we adopt this?
  • NFv9 has smaplingInterval and samplingAlgorithm
    • PSAMP showed that this is not sufficient

6

list of not yet used nfv9 fields
List of not yet used NFv9 fields
  • engineType (38), engineID (39)
  • ipv4SrcPrefix (44), ipv4DestPrefix (45)
  • MPLSTopLabel (46), MPLSTopLabelIPaddress (47)
  • destClassOfService (55)
  • srcMACAddr (56), destMACAddress (57)
  • srcVLAN (58), dstVLAN (59)
  • direction (61) : {ingressFlow|egreeFlow}
  • IPv6OptionHeaders (74)
  • MPLSlable1-10 (70-78)
  • mplsTopLabelIPv6Addr

7

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